Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
70 + 10 = ______
7 × 10 = ______
8 × 10 = ______
15 + 20 = ______
71 − 10 = ______
3 × 10 = ______
49 + 20 = ______
28 + 20 = ______
38 − 10 = ______
79 + 20 = ______
1 × 10 = ______
4 × 10 = ______
11 + 20 = ______
55 + 20 = ______
34 − 10 = ______
88 + 10 = ______
27 + 10 = ______
18 + 20 = ______
64 − 10 = ______
11 + 10 = ______
